Hi JVerdugo,
The question would be, why not use a MoGraph-Cache-Tag for this.
You might have tried this, but it needs to be mention, to go through the options.
The next step to “harvest” all selection, as the Alembic contains only the Inside and outside Faces, would be to copy the Voronoi as it is, keep the Voronoi active and press the c key. This gives all the selections otherwise only generated, but not really available to each “chunk” of Voronoi. After you ex/im-ported the Voronoi via Alembic, the four (one edge, three point) selection tags can be copy and pasted to the Alembic import. Per chunk, so kind of a massive work, if your object has a huge number of these chunks.
It seems to be much faster to keep the Editable version, without any animation and feed the PSR [matrix] from the Alembic to the Fracture. In this way the the Alembic carries only the information, and since it is not generated to be visible, it might give you the performance push you are after.
One idea would be to use XRef, but that should be tested with your specific set up. Perhaps a cached version in an referenced file might help already, without Alembic. This would allow for faster adjustments.
Please explore the attached file, I hope it is not too cryptic:
https://www.amazon.com/clouddrive/share/zgW2aF5h4X03R9D7maEJw50ep1EQdtF9nrzuHj7JB1P?ref_=cd_ph_share_link_copy
The “Fracture_ex-im” has four copied selections, just to show case that it works.
Let me know if there is something else or if you need a different idea. I’m happy to look into it.
All the best